The linear transformation 
? is defined by 
, where
?
?
Find the preimage of 
.
?
A. ?
, where r, s, t are real numbers
B. ?
, where r, s, t are real numbers
C. ?
, where r, s, t are real numbers
D. ?
, where r, s, t are real numbers
E. ?
, where r, s, t are real numbers
Answer: B
Mathematics
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Solve the equation on the interval 0 ? ? < 2?.cos2 ? = 3(1 - sin ?)
A. 
B. {0}
C. 
D. {?}
Mathematics
If A denotes the area of the sector of a circle of radius r formed by the central angle ?, find the missing quantity. If necessary, round the answer to two decimal places.r = 15 inches, ? = 45°, A = ?
A. 11.78 in2 B. 5.89 in2 C. 176.63 in2 D. 88.31 in2
Mathematics
Find the power rounded to three significant digits.
A. 465.484 B. 466.485 C. 465.485 D. 465 E. 466
Mathematics
Graph the exponential function.f(x) = 2|x|
A. 
B. 
C. 
D. 
Mathematics